# Q Swim vs C++ Data Structures & Algo

The clearest difference is in-app purchases: C++ Data Structures & Algo at none against Q Swim's 4. Q Swim's advantage is update cadence (every 5 weeks vs every 3 months) and iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Q Swim sells 4 in-app purchases, starting at $0.99 per month. C++ Data Structures & Algo asks for nothing beyond the download.

Q Swim ships an update every 5 weeks, C++ Data Structures & Algo every 3 months. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Q Swim | C++ Data Structures & Algo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (4 ratings)](https://appshunter.io/ios/app/q-swim/id1364009823/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 18 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tom Barton](https://appshunter.io/developer/1364009822) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Q Swim

[App page](https://appshunter.io/ios/app/q-swim/id1364009823)

Improve swimming performance by assessing and enhancing your body's mobility and strength out of the water. Identify restrictions, track progress with photo comparisons, and access customized warm-up routines. Access educational resources on swimming techniques and physiotherapy.

**Highlights:** Assess body position out of water, Compare swim screen photos, Track and address restrictions, Customized pre-swim warm-up routines, Educational resources on swimming, Improve mobility and strength

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Monthly Subscription | $1.49 | per month |
| Yearly Subscription | $11.99 | per year |
| Yearly Subscription | $12.99 | per year |


### C++ Data Structures & Algo

[App page](https://appshunter.io/ios/app/c-plus-plus-data-structures-and-algo/id6756428007)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Q Swim free?

Q Swim is free to download, with in-app purchases available.

### Is C++ Data Structures & Algo free?

C++ Data Structures & Algo is free to download, with no in-app purchases.

### Do Q Swim or C++ Data Structures & Algo have ads?

Neither Q Swim nor C++ Data Structures & Algo shows ads.

### Which is updated more often, Q Swim or C++ Data Structures & Algo?

Q Swim ships an update every 5 weeks, and C++ Data Structures & Algo every 3 months. Most recently, Q Swim was updated on October 19, 2026 and C++ Data Structures & Algo on October 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*